pledit([n_element[, n_contour],] <keylist>)where, as usual,
<keylist> has the form key1=value1,
key2=value2, ...
pledit changes some property or properties of element number n_element (and contour number
n_contour of that element). If n_element and n_contour are omitted, the default is the most
recently added element, or the element specified in the most recent plq query command.
The keywords can be any of the keywords that apply to the current element. These are:
plg: color, type, width, marks, mcolor, marker,
msize, mspace, mphase, rays, rspace, rphase, arrowl,
arroww, closed, smooth
plm: region, boundary, inhibit, color, type, width
plc: region, color, type, width, marks, mcolor, marker,
msize, mspace, mphase, smooth, levs
(For contours, if you aren't talking about a particular n_contour, any changes will
affect ALL the contours.)
plv: region, color, hollow, width, aspect, scale
plf: region
pldj: color, type, width
plt: color, font, height, path, justify, opaque
A plv (vector field) element can also take the scalem keyword to multiply all vector lengths by a specified factor.
A plt (text) element can also take the dx and/ or dy keywords to adjust the text position by (dx, dy).